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comparison gcc/testsuite/g++.dg/ext/attr-optimize.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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111:04ced10e8804 131:84e7813d76e9
1 // Bug c++/83871 - wrong code due to attributes on distinct template
2 // specializations
3 // Test to verify that an explicit template specifialization does not
4 // "inherit" attribute optimize from a primary template declared with
5 // one.
6 // { dg-do compile }
7 // { dg-options "-O2 -Wall -fdump-tree-optimized" }
8
9 enum Special { };
10
11 void foptimize_none_primary_failed ();
12
13 template <class T>
14 void __attribute__ ((optimize ("no-printf-return-value")))
15 foptimize_none ()
16 {
17 // The call to snprintf and the test should be retained.
18 if (2 != __builtin_snprintf (0, 0, "%hhx", 0x12))
19 foptimize_none_primary_failed ();
20 }
21
22 void foptimize_none_special_failed ();
23
24 template <>
25 inline void
26 foptimize_none<Special>()
27 {
28 // The whole if statement should be eliminated.
29 if (3 != __builtin_snprintf (0, 0, "1%hhx", 0x12))
30 foptimize_none_special_failed ();
31 }
32
33 void test_primary ()
34 {
35 foptimize_none<void>();
36 // { dg-final { scan-tree-dump-times "foptimize_none_primary_failed *\\(\\)" 1 "optimized" } }
37 }
38
39 void test_special ()
40 {
41 // Should be eliminated.
42 foptimize_none<Special>();
43 // { dg-final { scan-tree-dump-not "foptimize_none_special_failed *\\(\\)" "optimized" } }
44 }
45
46 // { dg-final { scan-tree-dump-times "__builtin_snprintf" 1 "optimized" } }